Fuse powder composition



NT OFFECE UITED FUSE POWDER COMPOSITION George C. Hale and David Hart, Dover, N. J.

No Drawing. Application July 5, 1944, Serial No. 543,580

2 Claims. (C1. 52-2) (Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) The invention described herein may be manu- The burning time indicated in each of the examfactured and used by or for the Government for ples above is that of powder column 2" long governmental purposes without the payment to X 0.22" diameter. While in the examples shown us of any royalty thereon. above, we have indicated the use of barium alloys,

The present invention relates to the employ- 5 it is to be understood that we do not limit the inment of metallic alloys in combination with solid vention to the particular barium alloys shown, non metallic elements, to form substantially gasand we envisage the fact that certain other alkaless fuze powder compositions which are intended line earth metal alloys can be used to secure refor use primarily in powder trains of ammunition sults comparable to those set forth. to provide a definite burning time interval. Test data also shows that the burning rates of The present invention is closely related to an fuze powder compositions containing metal alloys application filed in our names on June 9, 1944, and solid non-metallic elements can be varied bearing Serial Number 539,504, now Patent No. ov r a W an y vary g the p p t ns of 2,461,544. In that application we made claim to alloy to the solid non-metallic element. These the use of metals in combination with solid nonnew fu e p w er compositions are e y i y metallic elements to form substantially gasless p p but careful control f the particle size fuze powder compositions. of the ingredients is essential. It is desirable We have also discovered that in certain parthat the alloys and non-metals be finely divided ticular cases, it is preferable to use a metallic so as to pass through a 250 mesh screen. Dry alloy rather than the metal. While the alloys incorpo a i n may be sed o the c mposi i s offer little advantage over the metals, with rem y be mixed w th Water r ny er liqu spect to establishing the proper timing in a parnecessary to avoid accidental ignition in manuticular component, or in obtaining uniformity in facture. After thorough incorporation, the fuze rate of burning, other advantages have been powders are granulated in commercially available found from the standpoint of manufacture, store ca granulatois by p g through age, and economy. For example, alloys of magscreens. Although binding agents have not been nesium are more brittle and hence more readily found necessary to assist in a u ati g these reduced to finely divided powder than the metal p w one may be us if sp i cases requi e it.

alone. Another advantage in the use of certain Havin t described t vention What 15 alloys resides in the fact that particular alloys claimed as new is: may be commercially available While the com- A S bst y gaSlBSS e ay p der train ponent parts of the alloys may not be readily formed of a mixture of about 90% of finely divided procurable. A still further advantage lies in the ese-t t alloy and about 0f finely fact that certain particular metal alloy composied p tions are more stable than the particular metals A su s y gasless de ay p er train making up such alloys. formed of a mixture of about 90% of manganese- The invention can best be understood from the titanium alloy sufiiciently finely divided to p s following particular exemplifications,which,howthrough a 250 mesh screen and about 10% of ever, are not to be understood as limiting the Sulphur Sufficiently finely divided p through scope of the invention and are cited merely as 40 a 250 mesh s illustrative examples. GEORGE C. HALE.

DAVID HART.

E P g, gg, {5, gg REFERENCES or'rnn The following references are of record in the l Ferrovanadium Sulfur 20 Seconds7 file of thls patent: 2 Mnanganese-Tita- Sulfur l0 5 UNITED STATES PATENTS attests t stem- 23 t Number Name Date 5 Barium-silicon 90 Selenium-. l0 19 50 1,971,502 Piccard 23, 1934 2,185,371 Burrows et al Jan. 2, 1940 

